feat: Add templates to create working release (#422)

* Add templates

* Move API structs to codersdk

* Back to green tests!

* It all works, but now with tea! 🧋

* It works!

* Add cancellation to provisionerd

* Tests pass!

* Add deletion of workspaces and projects

* Fix agent lock

* Add clog

* Fix linting errors

* Remove unused CLI tests

* Rename daemon to start

* Fix leaking command

* Fix promptui test

* Update agent connection frequency

* Skip login tests on Windows

* Increase tunnel connect timeout

* Fix templater

* Lower test requirements

* Fix embed

* Disable promptui tests for Windows

* Fix write newline

* Fix PTY write newline

* Fix CloseReader

* Fix compilation on Windows

* Fix linting error

* Remove bubbletea

* Cleanup readwriter

* Use embedded templates instead of serving over API

* Move templates to examples

* Improve workspace create flow

* Fix Windows build

* Fix tests

* Fix linting errors

* Fix untar with extracting max size

* Fix newline char

coderd/parameter/validate_test.go

@@ -0,0 +1,20 @@
+package parameter_test
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/coder/coder/coderd/parameter"
+)
+
+func TestValidate(t *testing.T) {
+	t.Parallel()
+	t.Run("Contains", func(t *testing.T) {
+		t.Parallel()
+		values, valid, err := parameter.Contains(`contains(["us-east1-a", "us-central1-a"], var.region)`)
+		require.NoError(t, err)
+		require.True(t, valid)
+		require.Len(t, values, 2)
+	})
+}